Historical weather data, all-time temperature records, and monthly climate averages for Windsor, CT. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Windsor sits in that classic New England in-between zone — historically averaging a high of 55° and a low of 34°, it's warm enough to feel like spring but cold enough to remind you it isn't quite yet. The date has swung wildly over 77 years of records, from a bitter 19° in 1982 to a shirt-sleeve 75° back in 1985. There's a 31% chance of rain today, though snow is unlikely at just 5%.
Windsor has seen some genuine extremes over its 77 years of record-keeping — from a scorching 103° on July 22, 2011, to a bone-crushing -26° on January 22, 1961, a range of 129 degrees. A single day in August 1955 dumped 7.7 inches of rain, and a January 2011 storm buried the town under 24 inches of snow.
Summer is the clear star here, with highs peaking around 85-86° in mid-to-late July — perfect if you're planning a warm-weather visit. Winters are cold and real, with January highs averaging just 34-35°. The wettest stretch falls in early August, averaging 1.2 inches per week, so pack accordingly if you're visiting in late summer.